Add constexpr shift_right mp helper #4008
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reneme
approved these changes
Apr 12, 2024
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| W carry = 0; | ||
| for(size_t i = 0; i != N; ++i) { | ||
| const W w = x[N - 1 - i]; | ||
| x[N - 1 - i] = (w >> S) | carry; | ||
| carry = w << (WordInfo<W>::bits - S); | ||
| } |
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If we'd let the loop run backwards from i = N - 1 to i >0, would that make the indices easier to understand?
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I agree the indices would be clearer going in the other direction. But for whatever reason I find the pattern of consistently mapping from i \in [0..N) to an action on that i easier to follow.
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